This page explains how Ayman Ibrahim (USATT# 96623)'s rating went from 1270 to 1300 at the BTTC League event from 30 Nov 2017. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.